/* ============================================================
   小遊戲 — Launchpad
   Warm theme matching the games. Big tap targets for seniors.
   ============================================================ */

:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --text: #3d3229;
  --text-light: #8a7d72;
  --accent: #c9956b;
  --accent-light: #f5e6d3;
  --border: #d4c8bb;
  --shadow: 0 4px 24px rgba(90, 70, 50, 0.10);
  --shadow-lg: 0 8px 32px rgba(90, 70, 50, 0.14);

  --title-font: 44px;
  --subtitle-font: 18px;
  --card-title-font: 36px;
  --card-subtitle-font: 18px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
}

html, body {
  height: 100%;
  height: 100dvh;
}

body {
  font-family: -apple-system, 'PingFang TC', 'Noto Sans TC', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

.launcher {
  width: 100%;
  height: 100%;
  height: 100dvh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px;
  padding-top: calc(24px + env(safe-area-inset-top, 0px));
  padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

/* Share button — top-right floating */
.share-btn {
  position: absolute;
  top: calc(24px + env(safe-area-inset-top, 0px));
  right: 24px;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border: 2px solid var(--border);
  background: var(--card);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  padding: 10px;
  z-index: 5;
  box-shadow: 0 2px 8px rgba(90, 70, 50, 0.12);
}
.share-btn svg {
  width: 100%;
  height: 100%;
}
.share-btn:active {
  transform: scale(0.94);
  background: var(--accent-light);
  border-color: var(--accent);
}

@media (min-width: 748px) {
  .share-btn {
    width: 64px;
    height: 64px;
    top: calc(32px + env(safe-area-inset-top, 0px));
    right: 32px;
    padding: 14px;
  }
}

/* Share modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(60, 45, 35, 0.5);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 100;
}
.modal-overlay.show { opacity: 1; pointer-events: all; }

.share-modal {
  background: var(--card);
  border: 3px solid var(--border);
  border-radius: 28px;
  padding: 32px 36px 28px;
  text-align: center;
  width: 88%;
  max-width: 420px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.share-modal h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 3px;
}

.share-sub {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.5;
}

.share-qr {
  background: #ffffff;
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  margin: 0 auto 16px;
  display: inline-block;
}
.share-qr img {
  display: block;
  width: 220px;
  height: 220px;
  image-rendering: pixelated;
}

.share-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px;
  color: var(--text);
  background: var(--accent-light);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
  user-select: text;
}

.share-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.share-modal .text-btn {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 2px;
  transition: all 0.15s;
  font-family: inherit;
}
.share-modal .text-btn:active { transform: scale(0.96); background: var(--accent-light); }
.share-modal .text-btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.share-modal .text-btn.primary:active { background: #b6845c; }

@media (min-width: 748px) {
  .share-modal { padding: 40px 44px 32px; max-width: 480px; }
  .share-modal h2 { font-size: 34px; }
  .share-sub { font-size: 18px; }
  .share-qr img { width: 280px; height: 280px; }
  .share-url { font-size: 17px; padding: 12px 18px; }
  .share-modal .text-btn { font-size: 19px; padding: 14px 22px; }
}

.launcher-header {
  text-align: center;
  flex-shrink: 0;
}

.launcher-title {
  font-size: var(--title-font);
  font-weight: 700;
  letter-spacing: 12px;
  color: var(--text);
  margin-bottom: 8px;
}

.launcher-subtitle {
  font-size: var(--subtitle-font);
  color: var(--text-light);
  letter-spacing: 4px;
}

/* --- Game grid --- */

.game-grid {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  /* Two columns on phones; wider breakpoints override below */
  grid-template-columns: repeat(2, 1fr);
  /* Let rows size to the square tiles' natural height — don't force 1fr,
     which fights aspect-ratio and lets content overflow. */
  grid-auto-rows: min-content;
  gap: 14px;
  overflow-y: auto;
  align-content: start;
  -webkit-overflow-scrolling: touch;
  padding-right: 2px; /* leave room for scrollbar if any */
}

.game-card {
  background: var(--card);
  border: 3px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  min-height: 0;
  overflow: hidden;
}

.game-card:active {
  transform: scale(0.97);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.card-icon {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.card-icon svg {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
}

.card-text {
  text-align: center;
  flex-shrink: 0;
}

.card-title {
  font-size: var(--card-title-font);
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--text);
  margin-bottom: 6px;
}

.card-subtitle {
  font-size: var(--card-subtitle-font);
  color: var(--text-light);
  letter-spacing: 2px;
}

/* Card-specific accent */
.tetris-card .card-title { color: var(--text); }

.launcher-footer {
  text-align: center;
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: 2px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.version-badge {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.5px;
  color: var(--text-light);
  opacity: 0.7;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255,255,255,0.5);
}
.version-badge:empty { display: none; }

.refresh-btn {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  width: 36px;
  height: 36px;
  padding: 7px;
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s, background 0.15s;
}
.refresh-btn svg { width: 100%; height: 100%; }
.refresh-btn:active {
  transform: scale(0.92) rotate(-90deg);
  background: var(--accent-light);
  color: var(--accent);
}

/* =============================================================
   TABLET PORTRAIT (iPad)
   ============================================================= */

@media (min-width: 748px) and (orientation: portrait) {
  :root {
    --title-font: 60px;
    --subtitle-font: 22px;
    --card-title-font: 34px;
    --card-subtitle-font: 18px;
  }

  .launcher {
    padding: 28px 36px;
    gap: 24px;
  }

  .launcher-title { letter-spacing: 20px; }

  .game-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }

  .game-card {
    border-width: 4px;
    border-radius: 32px;
    padding: 24px;
    gap: 16px;
  }

  .card-title { letter-spacing: 10px; }
}

/* =============================================================
   LARGE TABLET PORTRAIT (iPad Pro 12.9")
   ============================================================= */

@media (min-width: 1024px) and (orientation: portrait) {
  :root {
    --title-font: 72px;
    --subtitle-font: 26px;
    --card-title-font: 38px;
    --card-subtitle-font: 20px;
  }
  .game-grid { grid-template-columns: repeat(3, 1fr); }
}

/* =============================================================
   TABLET LANDSCAPE — two cards side by side
   ============================================================= */

@media (min-width: 700px) and (orientation: landscape) {
  :root {
    --title-font: 44px;
    --subtitle-font: 20px;
    --card-title-font: 30px;
    --card-subtitle-font: 16px;
  }

  .launcher {
    padding: 28px 36px;
    padding-left: calc(36px + env(safe-area-inset-left, 0px));
    padding-right: calc(36px + env(safe-area-inset-right, 0px));
    gap: 24px;
  }

  .launcher-title { letter-spacing: 20px; }

  .game-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .game-card {
    border-width: 4px;
    border-radius: 28px;
    padding: 20px;
    gap: 12px;
  }

  .card-title { letter-spacing: 6px; }
}

/* Large landscape (iPad Pro 12.9" landscape, desktops) — 4 cols */
@media (min-width: 1200px) and (orientation: landscape) {
  .game-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* small phones */
@media (max-width: 380px) {
  :root {
    --title-font: 32px;
    --subtitle-font: 14px;
    --card-title-font: 26px;
    --card-subtitle-font: 14px;
  }
  .launcher { padding: 16px; gap: 16px; }
  .launcher-title { letter-spacing: 8px; }
  .game-card { padding: 18px; border-radius: 22px; gap: 12px; }
  .card-title { letter-spacing: 4px; }
}